fix grafana docker path

Change-Id: I6fc6bec10581a9e397fe00adc3cd15ce26a088b5
diff --git a/init.yml b/init.yml
index e5e0289..4f3a1ec 100644
--- a/init.yml
+++ b/init.yml
@@ -214,8 +214,8 @@
           - registry: ${_param:mcp_docker_registry}/openstack-docker
             target_registry: ${docker:client:registry:target_registry}/openstack-docker
             name: prometheus_relay:${_param:apt_mk_version}
-          - registry: ${_param:mcp_docker_registry}/openstack-docker/grafana
-            target_registry: ${docker:client:registry:target_registry}/openstack-docker/grafana
+          - registry: ${_param:mcp_docker_registry}/openstack-docker
+            target_registry: ${docker:client:registry:target_registry}/openstack-docker
             name: grafana:${_param:apt_mk_version}
           - registry: ${_param:mcp_docker_registry}/openstack-docker
             target_registry: ${docker:client:registry:target_registry}/openstack-docker